Hypodermic syringe



AQE. sMn-H HYPODERMIC SYRINGE Original'Filed Nov; C5,l 1933 June 2, 1942.

n INVENTOR Arfhur E, Smifh. v

ATTORNEY.

Patented June 2, 1942` UNITEDv STATES om@ y i IiYrQ'lEzii/Zlggrmree Y' i i i .original applicatidNovembr1933, serialN'o. `696.506..` Divided and thisappliacation May 5,

6 Claims. (Cl. 12S- 218) Va novel ampul construction.

An additionalobject ci the invention is to ampule.

A further object of the invention is to provide a novel ampule syringe.

Other objects and the advantages of this invention will be apparent from the following description taken in connection with the accompanying drawing, wherein:

Fig. l is a central section showing my in vention; y

Fig. 2 is a fragmentarysectional View showing the ampule; and

Fig. 3 is a section showing the closure of Fig. 2

provide'a novel drug holding cork for use in an `in another position.

. tures 34 and is of considerablyl less diameter This application is a division of'my co-pending application, Serial No. 696,506, liled` November 3, 1933, now Patent No. 2,251,527, patentedV August 5, 1941.

Referring now to the accompanying drawingl n by reference characters I have shown my invention as embodied in aA syringe indicated generally at I 0. As shown this syringe includes a barrel l I having a front member l2 thereon at one end. The barrel is closed at the other end by a cap I3 which has a Vplunger l'II movable therethrough. The plungerll has a head 'l2 xedthereon which is normally urged'forward by a disk I5 which is slidably mounted on `the plunger and is engaged bya spring I6. `'I'he spring I6 is surrounded by telescopic segments I1 as clearly shown in the drawing.

Within the barrel Il I show my improved ampule 69 which is preferably made of glass and is cylindrical with ends at right angles to the axis of the ampule.

In the front end the ampule is provided with Y a closure 5I having a hole 52 extending therethan Vthe diameterv of the hole 52 so that the tube enters the hole without touching the walls thereof and thereby avoids mishaps.

The ampule 69 has a, movable piston therein indicated generally at 69d. This piston is made of two parts comprising an upper member 69? and a lower' member 89". These members are provided with aligning recesses 69h. The upper recess is closed by a diaphragm 69e and the lower recess is closed by a diaphragm 69e.` A tablet member lll is placed in the recess between the members 69e and 69e. When the plunger 'H is moved inwardly the head 12 moves the piston 63a while the disk l5 abuts against the end Vof the ampule 69. Y

In use the plunger 1| perforates the diaphragm 69e, then pushes the tablet 10 through the diaphragm 69e into the vehicle. The plunger will include means on its end face, such as the head 12, to seal the aperture produced when the diaphragms are removed. The closure 5l and piston members 69' and 69 are made of rubber or similar material. n

From the foregoing description it will be apparent that I have invented a novel type of ment ampule having three corks therein, two of able portionsorming the'ends of a chamber, a drug in the chamber, the third cork being spaced from the two corks to form a second chamber, the said two corks being frictionallyengaged with the walls of the ampule and movable together as a piston. Y

2. In combination Vwith a multiple compartmentampule having a. cylindrical inner wall and having three disks therein, two of said disks being adjacent each other and having pierceable portions forming the ends of `a chamber, the peripheries of the said two disks having frictional sealing engagement with thel inner Wall of the ampule; a drug in the chamber, the third disk being spacedfrom the two disks to form a second chamber, a vehicle for the drug in the second chamber, a hypodermic syringe plunger having a puncturing element at one end thereof, and adapted when moved to pierce the rst two disks to cause the rst chamber to be opened to the second chamber.

drug in one compartment and a vehicle for the drug in the other compartment, two of said sepa- Y rators being puncturable by the puncturing member and having peripheral portions thereon, each vperipheral portion being slidably engaging said tubular conning means.

4. In combination with a syringe having a barrel and a plunger operating therein, said plunger having a piercing element on the inner end, a multiple compartment ampule comprising a tubular outer member and a plurality of disks secured in sealing relation therein to form separated compartments hermetically sealed from each other, at least two of said disks being pierceable and normally imperforate, said pierceable disks being cylindrical and being entirely inside said tubular member, two of said disks being in close relation at one end of the tubular member in position to be engaged by the piercing element of the plunger.

5. In combination with a syringe having a barrel and a plunger operating therein, said plunger having a piercing element on the inner end, a multiple compartment ampule comprising a tubular outer member and a plurality of members each secured in sealing relation therein to form separated compartments hermetically sealed from each other, at least two of said members being pierceable and normally imperforate, said pierceable members being hollow cylindrical elements and being entirely inside said tubular member with their peripheries frictionally engaging the walls thereof, said pierceable members being in close relation at one end of the tubular member in position to be engaged by the piercing element of the plunger, said piercing element having a shoulder engaging the outer of said two pierceable members.

6. A multiple compartment ampule comprising a tubular outer member, a plurality of separators disposed in said member to form separated compartments, the entire peripheral surfaces of said separators located within said member being frictionally sealed tothe inner wall of the member, at least two of said separators being normally imperforate and readily pierceable and being slidable in said tubular member.

ARTHUR E. SMITH. 

